Synthesis and Characterization of Fast pH-Responsive Silk Sericin/Poly(methacrylic acid) Interpenetrating Polymer Network Hydrogel

Abstract

Abstract:

Interpenetrating polymer networks(IPN) composed with poly(methacrylic acid)(PMAA) and silk sericin(SS) were prepared by the simultaneous-IPN method. The swelling behavior of the resultant IPN hydrogels was studied at various pH values. The results show that the swelling ratios of the IPNs depend significantly on pH of the aqueous solutions. In pH=9.2, the IPNs have a higher swelling ratio due to the repulsion between —COO^- groups derived from —COOH of the polymer chains and the osmosis. However, the swelling ratios diminish with the decrease of pH values. All IPN hydrogels show a fast deswelling rate and reversible swelling-shrinking property.

Key words: Silk sericin, Poly(methacrylic acid), pH-sensitivity, Interpenetrating polymer network, Swelling behavior

TrendMD:

WU Wen, WANG Dong-Sheng, WANG Li-Qun*. Synthesis and Characterization of Fast pH-Responsive Silk Sericin/Poly(methacrylic acid) Interpenetrating Polymer Network Hydrogel[J]. Chem. J. Chinese Universities, 2009, 30(4): 830.

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